398400640

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{56591}}^1$

素因数の和:56621

約数の個数: 64

約数和(自身を含む): 1039029120

約数和(自身を除く): 640628480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 7040, 56591, 113182, 226364, 282955, 452728, 565910, 622501, 905456, 1131820, 1245002, 1810912, 2263640, 2490004, 3112505, 3621824, 4527280, 4980008, 6225010, 7243648, 9054560, 9960016, 12450020, 18109120, 19920032, 24900040, 36218240, 39840064, 49800080, 79680128, 99600160, 199200320, 398400640]

約数ペア:

[(1, 398400640), (2, 199200320), (4, 99600160), (5, 79680128), (8, 49800080), (10, 39840064), (11, 36218240), (16, 24900040), (20, 19920032), (22, 18109120), (32, 12450020), (40, 9960016), (44, 9054560), (55, 7243648), (64, 6225010), (80, 4980008), (88, 4527280), (110, 3621824), (128, 3112505), (160, 2490004), (176, 2263640), (220, 1810912), (320, 1245002), (352, 1131820), (440, 905456), (640, 622501), (704, 565910), (880, 452728), (1408, 282955), (1760, 226364), (3520, 113182), (7040, 56591)]